[INFO] fetching crate chessground 0.8.0...
[INFO] testing chessground-0.8.0 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate chessground 0.8.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate chessground 0.8.0 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate chessground 0.8.0
[INFO] finished tweaking crates.io crate chessground 0.8.0
[INFO] tweaked toml for crates.io crate chessground 0.8.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded btoi v0.3.0
[INFO] [stderr]   Downloaded option-filter v1.0.2
[INFO] [stderr]   Downloaded rsvg-sys v0.6.0
[INFO] [stderr]   Downloaded rsvg v0.4.0
[INFO] [stderr]   Downloaded shakmaty v0.8.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f4bce5b90928515f6e8733f1f1cfb60fd8ee6953da562f8989104c6b254b3f3d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f4bce5b90928515f6e8733f1f1cfb60fd8ee6953da562f8989104c6b254b3f3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f4bce5b90928515f6e8733f1f1cfb60fd8ee6953da562f8989104c6b254b3f3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4bce5b90928515f6e8733f1f1cfb60fd8ee6953da562f8989104c6b254b3f3d", kill_on_drop: false }`
[INFO] [stdout] f4bce5b90928515f6e8733f1f1cfb60fd8ee6953da562f8989104c6b254b3f3d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 28098e8a2c3619d9c91db242758cfcd43611f2325a5413b01521d66c43649b17
[INFO] running `Command { std: "docker" "start" "-a" "28098e8a2c3619d9c91db242758cfcd43611f2325a5413b01521d66c43649b17", kill_on_drop: false }`
[INFO] [stderr]    Compiling gio v0.4.1
[INFO] [stderr]    Compiling cairo-rs v0.4.1
[INFO] [stderr]    Compiling gdk-pixbuf v0.4.0
[INFO] [stderr]    Compiling c_vec v1.3.3
[INFO] [stderr]    Compiling gdk v0.8.0
[INFO] [stderr]    Compiling gtk v0.4.1
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]    Compiling nodrop v0.1.14
[INFO] [stderr]    Compiling option-filter v1.0.2
[INFO] [stderr]    Compiling glib-sys v0.6.0
[INFO] [stderr]    Compiling gobject-sys v0.6.0
[INFO] [stderr]    Compiling gio-sys v0.6.0
[INFO] [stderr]    Compiling gdk-pixbuf-sys v0.6.0
[INFO] [stderr]    Compiling cairo-sys-rs v0.6.0
[INFO] [stderr]    Compiling pango-sys v0.6.0
[INFO] [stderr]    Compiling gdk-sys v0.6.0
[INFO] [stderr]    Compiling atk-sys v0.6.0
[INFO] [stderr]    Compiling gtk-sys v0.6.0
[INFO] [stderr]    Compiling rsvg-sys v0.6.0
[INFO] [stderr]    Compiling shakmaty v0.8.1
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling btoi v0.3.0
[INFO] [stderr]    Compiling glib v0.5.0
[INFO] [stderr]    Compiling pango v0.4.0
[INFO] [stderr]    Compiling relm-gen-widget v0.14.6
[INFO] [stderr]    Compiling relm-derive-common v0.14.6
[INFO] [stderr]    Compiling relm-derive v0.14.6
[INFO] [stderr]    Compiling rsvg v0.4.0
[INFO] [stderr]    Compiling relm-core v0.14.6
[INFO] [stderr]    Compiling relm-state v0.14.6
[INFO] [stderr]    Compiling relm v0.14.6
[INFO] [stderr]    Compiling chessground v0.8.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/ground.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | #[derive(Debug, Msg)]
[INFO] [stdout]    |                 --- rustdoc does not generate documentation for match arms
[INFO] [stdout] 54 | pub enum GroundMsg {
[INFO] [stdout] 55 |     /// Flip the board.
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/ground.rs:57:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | #[derive(Debug, Msg)]
[INFO] [stdout]    |                 --- rustdoc does not generate documentation for match arms
[INFO] [stdout] ...
[INFO] [stdout] 57 |     /// Set the board orientation.
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/ground.rs:59:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | #[derive(Debug, Msg)]
[INFO] [stdout]    |                 --- rustdoc does not generate documentation for match arms
[INFO] [stdout] ...
[INFO] [stdout] 59 |     /// Set up a position configuration.
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/ground.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | #[derive(Debug, Msg)]
[INFO] [stdout]    |                 --- rustdoc does not generate documentation for match arms
[INFO] [stdout] ...
[INFO] [stdout] 61 |     /// Set up a board.
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/ground.rs:64:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | #[derive(Debug, Msg)]
[INFO] [stdout]    |                 --- rustdoc does not generate documentation for match arms
[INFO] [stdout] ...
[INFO] [stdout] 64 |     /// Sent when the completed a piece drag or move.
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/ground.rs:66:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | #[derive(Debug, Msg)]
[INFO] [stdout]    |                 --- rustdoc does not generate documentation for match arms
[INFO] [stdout] ...
[INFO] [stdout] 66 |     /// Sent when shapes are added, removed or cleared.
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 35s
[INFO] running `Command { std: "docker" "inspect" "28098e8a2c3619d9c91db242758cfcd43611f2325a5413b01521d66c43649b17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28098e8a2c3619d9c91db242758cfcd43611f2325a5413b01521d66c43649b17", kill_on_drop: false }`
[INFO] [stdout] 28098e8a2c3619d9c91db242758cfcd43611f2325a5413b01521d66c43649b17
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d258111b321d5143ef9bd8dd6c341d6d9331172538b3b4b530d1ae6689c48cf8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d258111b321d5143ef9bd8dd6c341d6d9331172538b3b4b530d1ae6689c48cf8", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling relm-attributes v0.14.6
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/ground.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | #[derive(Debug, Msg)]
[INFO] [stdout]    |                 --- rustdoc does not generate documentation for match arms
[INFO] [stdout] 54 | pub enum GroundMsg {
[INFO] [stdout] 55 |     /// Flip the board.
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/ground.rs:57:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | #[derive(Debug, Msg)]
[INFO] [stdout]    |                 --- rustdoc does not generate documentation for match arms
[INFO] [stdout] ...
[INFO] [stdout] 57 |     /// Set the board orientation.
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/ground.rs:59:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | #[derive(Debug, Msg)]
[INFO] [stdout]    |                 --- rustdoc does not generate documentation for match arms
[INFO] [stdout] ...
[INFO] [stdout] 59 |     /// Set up a position configuration.
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/ground.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | #[derive(Debug, Msg)]
[INFO] [stdout]    |                 --- rustdoc does not generate documentation for match arms
[INFO] [stdout] ...
[INFO] [stdout] 61 |     /// Set up a board.
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/ground.rs:64:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | #[derive(Debug, Msg)]
[INFO] [stdout]    |                 --- rustdoc does not generate documentation for match arms
[INFO] [stdout] ...
[INFO] [stdout] 64 |     /// Sent when the completed a piece drag or move.
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/ground.rs:66:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | #[derive(Debug, Msg)]
[INFO] [stdout]    |                 --- rustdoc does not generate documentation for match arms
[INFO] [stdout] ...
[INFO] [stdout] 66 |     /// Sent when shapes are added, removed or cleared.
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/relm-attributes-0.14.6/src/lib.rs:22:1
[INFO] [stdout]    |
[INFO] [stdout] 22 | #![feature(proc_macro)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]    |
[INFO] [stdout]    = help: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `relm-attributes` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "d258111b321d5143ef9bd8dd6c341d6d9331172538b3b4b530d1ae6689c48cf8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d258111b321d5143ef9bd8dd6c341d6d9331172538b3b4b530d1ae6689c48cf8", kill_on_drop: false }`
[INFO] [stdout] d258111b321d5143ef9bd8dd6c341d6d9331172538b3b4b530d1ae6689c48cf8
